Key result
High-intensity interval training significantly improved peak oxygen uptake compared to control in post-MI patients (MD 3.83 mL/kg/min; 95% CI 3.25-4.41; P<0.01).
Why the study?
Although exercise-based cardiac rehabilitation is recommended for cardiovascular disease, which exercise characteristics are most beneficial for post-myocardial infarction patients remains controversial.
Does high-intensity interval training (HIIT) improve peak oxygen uptake compared to moderate-intensity continuous training or routine physical activity in post-myocardial infarction patients?
Meta-Analysis (n=387)
Does high-intensity interval training (HIIT) improve peak oxygen uptake compared to moderate-intensity continuous training or routine physical activity in post-myocardial infarction patients?
Mean Difference: 3.83 (95% CI 3.25–4.41)
p-value: p=< 0.01
High-intensity interval training significantly improves exercise capacity (peak VO2) in post-myocardial infarction patients without increasing the risk of adverse events compared to moderate-intensity training or routine activity.
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Supports HIIT for greater exercise capacity gains in post-MI rehab; confirms safety and superiority over moderate training in Level 1 evidence.
Qin et al. (2021) conducted a meta-analysis in post-myocardial infarction (n=387). High-intensity interval training (HIIT) vs. Moderate-intensity continuous training (MICT) and/or routine physical activity was evaluated on peak oxygen uptake (peak VO2) (MD 3.83, 95% CI 3.25, 4.41, p=< 0.01). High-intensity interval training significantly improved peak oxygen uptake compared to control in post-MI patients (MD 3.83 mL/kg/min; 95% CI 3.25-4.41; P<0.01).
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